Type I depressor septi muscles(62%) are visible and identifiable, and can be traced to full interdigitation with the orbicularis oris from their origin at the medial crural footplate.
In multiple videos of Neil Hallinan, he's discriminated how he can get patients' tight hips to relax and improve range of motion just by having them bite on a tongue depressor.
And he had a tarry piece of string around his neck and a little—we didn't use them in those days—a tongue depressor, an old tongue depressor, and on it, in lavender ink, it said, " Johnson."